Easiest way to make a duck hole?

[cmcnabb]

Originally Posted by Duck Butter

Herbicide will surely work, depending on the size of the hole you wanna make you can get some black plastic or tarps and stake it down for a week at a time and you will have ZERO vegetation there when you pick it up, this will solar kill your vegetation down to the roots. I am serious too

Will that work on water hycanth?